Any thoughts to an ideal successor to reface?

Here's what I'd love to see:

1) Keep the battery-operated, built-in speakers, and mini-keys.
This is the essence of reface: fun you can easily take anywhere and play instantly.
It needs to fit easily on your lap when sitting in an armchair, car/airplane seat, etc.
But evolve it towards a proper pro instrument instead of a toy.

2) Bigger keyboard. 49 keys? At least 44. Starting at low-E. I'd rather have more keys than those wide cheeks they currently have.

3) Beefier speakers/amp: E.g the current Rhodes MkI sound is barely inaudible even in a quiet room. It should be loud enough to at least jam with an acoustic guitar in a coffee shop gig. It seems like the enclosure could be made bigger/deeper/thicker without unduly compromising portability. I don't think weight is an issue.

4) (Optional?) beefy LiIon battery pack with built-in charging. Keep it plugged in at home, and don't have to worry about batteries when you grab it and go. Charge/powered via USB.

5) Combine the CP/YC/CS/DX into a full mini-stage keyboard and make the operating system deep: e.g. expose full menu-driven control over all the synth model parms (i.e. the full AN1x). Save patches with assignable quick patch-change buttons. Adjustable velocity curves. Clav A/B/C/D. Full control over all effects. EQ and Amp models. Have an LCD/OLED display and a panel chock full of direct sliders/controls/knobs/buttons to have fun live. Make them default to sensible things for each instrument (drawbars/etc), but make them assignable in the OS. Have a parameter "pick-up/scaling mode" (a' la Ableton) for all knobs/sliders so they don't cause abrupt changes when moving them after selecting a new sound (why isn't this standard on every keyboard??)

6) Piano, for crying out loud.

Price it at $999. I'd buy it in a heartbeat.